Smoking pipe



Dem 23, 1930.

H. J. TRENKAMP SMOKING PIPE Filed June 11, 1928 Patented Dec. 23, 1930 .UNITED STATES HERMAN J. TRENKAMP, OF CLEVELAND HEIGHTS, OHIO SMOKING PIPE Application filed June 11, 1928. Serial No. 28 4-, 338.

My invention pertains to a smoking pipe and more particularly to an advantageous design of bowl thereof.

I am well aware that a great number of conceptions have originated which involved the major purpose of improving the palatability or sanitation of pipe smoking, either by somehow demulcing smoke fumes, or by cooling them,or by lessening their contamination with nicotine, or by preventing emergence at the mouth piece of nicotinized fluid. The objects of my invention are generally the same, but I believe I have originated a structure sufficiently economical of manufacture,

readily cleaned and satisfactorily realizing all the intended objects.

Features of my design are:

1. Double walled bowl with an eveloping space between the walls both at the sides and bottom;

2. Integrality of the double walled construction.

3. Zigzag line or lines of draft with component draft ducts which are straight so as to be easily cleanable and which terminate 1n the enveloping space. V

4. Provision of a catch basin open through the bottom of the inner wall.

5. Detachable means for controlling communication through the inner bottom of the bowl.

6. Provision of a double walled bowl composed of complementary top and bottom sections, one of which carries the stem and one of which may optionally carry a centralcatch basin which is to have communication through the bottom of the other section.

It is to be realized that the scope of my invention comprehends many equivalent constructions.

and the particular description are merely specific exemplifications of a plurality of mechanical embodiments and arrangements.

Adverting to the drawing Figure 1 is a view of a smoking pipe embodying features of the preferred form of my invention and showing the bowl end as a vertical sectional view in the middle plane of the pipe.

proper.

The showing of the drawings Figure 2 is a horizontal sectional View taken on line 22 of Figure 1. i

A main bowl forming piece 1, probably to be composed of the wood known as briar, is fashioned with a conventionally shaped cavity2 defined, as exemplified, by an annular side wall 3 which, in conjunction with a narrowing bottom 4, forms the smoking bowl The central portion of the bottom 4 is' somewhat thickened by provision of a depending boss 5 which is'fashioned with an opening 6 of progressively smaller diameter in an upward direction. At circumferentially arranged points, a shortdistance above the opening 6, I provide draft ducts 7 It will be observed thatthe ducts 7 slope downwardly in an outward direction and it should be understood that while four are illustrated, any other number might be provided.

The draft ducts 7 afiord communication through the inner bowl with an annular space 8 which is additionally defined part by the outer annular wall 9. The space 8 may be provided by any suitable milling operation from below and it is to be noticed that its upper end is closed. The outer wall 9 carries on one side'an extension 10 which is fashioned with a bore 11, the inner end of which communicates with the space 8 and the other end of which is in registry with an alined bore (not necessary to be shown), of the conventional mouth piece 12. The illustrated locations of the ducts 7 and extension 10, hence its bore 11, are variable at will, but Iprefer to have the ducts 7 higher than the. opening 6 and they are preferably inclined, as shown, to permit of drilling formation and incidentally to facilitate cleaning from the top of the bowl.

A bottom bowl closure 13 carries an upstanding annular flange 14 of somewhat smaller diameter which is in screw-threaded connection at 15 with the lower inside end of the outer wall 9. The inner side of the closure 13 has'a central tapered projection 16adapted snugly to fit in and to close the opening 6 when the closure 13 has been tightly screwed lnto position. It will be observed that the inner side of the closure 13 may be considered as also providing a doubled walled design to provide a space defined by the flange 14 and a part of the projection 16 and which space forms a continuation of the space 8. The projection 16 is hollow to provide a catch basin 17, the upper open end of which is in communication through the bottom a of the bowl, and in order not to obstruct the desired drainage of nicotine into the basin 17, the upper end of the projection 16 should not be higher than the lower edge of the bottom 4.

My provision of a space continuously around an inner smoking bowl has an insulating effect both against excessive heating of the outer wall 9 and likewise against extremely heated smoke fumes. The disposition and direction of extent of the draft ducts 7 frus trate the passage into the stem either of nicotinized fluid or of nicotine charged to bacco particles. The drain basin 17 is an additional insurance against the emergence of noxious elements through the stem, and the catch basin 17 may be readily cleaned as often as fancy urges, through the bowl 2. Vhenever desired the closure 13 may be detached and thoroughly washed and thereby incidentally afford access to and purifying ventilation of the space 8. Simple, yet effective, means is had for keeping clean the bottom of my smoking bowl where collection of objectionable matter is compelled to occur and the necessity is avoided of a liquid cleansing likely to impregnate the desirable cake in the smoking bowl and which is preferably to be maintained dry. A pipe constructed after the manner of my invention is calculated to insure a dry, sanitary, palatable and hence' agreeable smoking repetition.

I claim i 1. A smoking pipe fashioned with two spaced annular bowl-forming walls, the lower end of each wall defining a round opening, a stem comm unicating through the outer wall, said inner wall being fashioned with a plurality of draft ducts downwardly inclined in an outward direction to afford communication with the space between said walls and a single detachable closure including-projections one of which is fitted within each of said wall-defined openings.

2. In a smoking pipe provided wit-h a dou ble-walled upper bowl section defining a space between its walls, said space being closed at its upper end, the inner wall being fashioned with a plurality of draft ducts sloping with reference to the center line of the bowl, the inner walls converging to form a bottom fashioned with a drain opening, and a complementary structure connected with the outer wall for closing the lower end of said space said structure including a projection fitted in said opening.

3. A smoking pipe fashioned with two spaced bowl-forming walls, a stem communicating through the outer wall, said inner wall being fashioned with a bottom opening and with a laterally extending draft duct affording communication therethrough and a bottom formed with a hollow projection fitted in said bottom opening and forming in conjunction with said inner wall a catch basin located interiorly of the inner bowl of the pipe.

In a smoking pipe, the combination of an integral double-walled upper end of a vow] confining an annular space between the walls thereofwhich is closed above and open below, a stem communicating with said annular space and with said bowl through a duct formed therein and a complementary bottom concentrically fitted within both walls of the upper end, the upper side of said bottom being fashioned with separated hollows adapted to communicate with said bowl and its surrounding space respectively.

Signed by me, this 7th day of June, 1928.

HERMAN J. TRENKAMP. 

